Gearing



(No Model.)

' H. F. SHAW.

GEARING.

' No. 544,796. Patented Aug. 20, 1895.

\IVITNEESES INA/ENTER UNITE STATES PATEN- i mcE,

HENRY SHAW, OF-BOSTON, MASSACHUSETTS, ASSIGNOR on ONE-HALF, TO

CHARLES M. MARTIN, or SAME PLACE, AND WILLIAM G. NIXON, OF.

BRAINTREE, MASSACHUSETTS.

- eEAR Nc.

srncrncarxoiv forming part of Letters Patent No. 544,796, dated August 20,1895);

Application'flled'dnnc 8, 1895. Serial No. 552,121. (No model.)

To all whom, it may concern.-

Be it known'that I, HENRY F. SHAW,'0f

Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Gearing, of which the followingis aspecification.

The objject of 'my'invention is to provide a Figure 1 represents an elevation showing a reducing-speed-gear mechanism constructed according to my invention. Fig. 2 represents a verticalflodgitudinal section of the same.- Fig. 3 represents a perspective. view showing a detachedview of a' portion of thesam'e. A'repr'esehts the'main frame or support, having suitable journal boxes or bearings O, carrying the horizontal shafts Band E. 'To the shaft B may be secured any suitable or well knowu devices for. communicating power and rotary motion togthe same. 7 v

F represents astati'onary crown-gear bolted or secured permanently in position "surroundingthe said shaft- B, which rotates freely "thereini This crown-gear F may contain, say, 3 5 twenty-five teeth, and the next'wabbling gear H, meshing therewith,may have twenty-four ;teeth=, or one less, and its opposite face may I have twenty-three teeth, or one less thanthe V first face. Now, ft-o-.the saidshaftE, near the b inward end thereof,"is..-secured the reverse crown-gear K, and at any desired point thereonissecuredthe gear or beltpulley L. The said crown-gear Kfmay' be, provided with twenty two teeth, or one less than: face of the middle double crown-gear His made to wabble by. means of the face-cams I, secured upon t the said shaft 13, and hearing'against the "opcrown-gear with which it meshes. The said limit its scope of construction.

-1. The combination of the M n rd E,

posite sides or faces of the said double crown 7 gear H, when rotated, causes the said gear 59 to wabble, and as its face, which has twenty;

four. teeth, meshes with the said stationary gear F, which. is provided with twenty-five? teeth, causes the said gear H torotate at-av slow speed, or only one revolution to twenty-j 'bling gear H is provided with the same number of teeth as the said non-rotative gear "F, it

would have the wabbling motion imparted to i I it by the rotary cams I, but would not rotate upon its own axis, but only rotate the said shaft Eat one'half the former speed, above described.

It will be understood that the diameter of r the gears and the numbers of teeth may be increased to any extent desired,or reduced and their-relative proportions varied, as circumstances may require, and-not depart from the essential features of my said iuventionor Having thus described my invention", I- claim-' jo'urnaied inthe frame A, the stationary crown gear F, the double crown 'wabbli'ng gear H,

the rotary crown gear K, and the cams I sestationary crown gear 13, the double crown .rotaryiwabbling gear H, the cams I secured:

ripen-the said shaft B, and the rotary. crown gear K secured uponthe said shaft E,.sub-' stantially as described. g

. HEN-RY F. SHAW. Witnesses:

SY vENUs WALKER, r

' Jos. H. Hanson,

. s5}. five revolutions of the said shaft '13, and as the 

